Camera



Oct. 16, 1923.

G. W. BLUM CAMERA Filed March 6, 1922 ypensive and effective means for Patented 16, .1923. a

UNITED, STA

TES PATENT' 0.

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Toallwlwmit may concern.'

Be it known that I', GEORGE W. BLUM, a

citizen ofthe United States, residing at San Francisco, in the county of San Francisco vand State of California, have invented new the like, and for copylng or retakingy photographs, pictures, e

he primary object of the invention is to provide a camera of the character described which will be superior to similar cameras heretofore used, in point of simplicity and inexpensivene of construction, accuracy and facility of operation, also in that true color values may be photographed and particularly, due to the provision of a novel form of finder and a means yfor automatically producing the necessary illumination coincident with the o ening of the shutter.

Another object `of the invention is to providea novel color filter device which may be readily inserted in a novel manner into the camera to provide for photographing color values.

Another object is to provide a novel, inexroducing the necessary artificial light wit electric lights in whlch a circuit closer for lights is f closed when the shutter is opened, and opens when the shutter is closed by simply operating the shutter button or lever.

The invention possesses other advantages ,Y and features' some of which, with the foreing will be set forth at length in thefolowing dscription where I shall outline in full that form of the invention which I have selected for` illustration in the drawings accompanying and forming a part -of the present specification. In said drawings I have shown one form of the construction of my invention, but it'is to be understood that I do not limit myself to such formsince the invention. as expressed in the claims may be embodied in a plurality of forms.

Referring to the drawings: l Fig. 1 represents a top plan view of the camera of my invention showing the case broken away .andi parts shown in sectionyand in dotted lines.

Fig. 2 represents a longitudinal verticaly sectional view of the camera, the sensitized plate and holder omitted.

joined to short Application mea :man e, 1922. seran m. 541,37.

Fig. 3 represents a section taken on thev plane of line 3-3 of Fi Referring to the embog tlon shown inthe accompanying drawing, 1 designates an elon ated camera casing which 1s .fopen at both ens and provided centrally with a partltion 2. A suitable photographic nuevos'^ 2. iment of the invenlens 3 y1s mounted in the partition 2. Di-

vergent walls 4 extend from points close to the lens on the partition 2 to points near but vspaced from one end of the casing and are walls 5 extending inwardly from the caslng 1. There are provided similar short walls 6 at the adjacent open end whereby the opening at said end is of less s1ze than the diameter of the casingI and whereby there will Ibe provided a space A to receive a ground glass 7 and a sensitized plate holder 8. The ground glass is held in place extendin across the space A at a point spaced inward y from the adjacentA open end of the casing by suitable means 9. The plate holder or frame 8 is removable and is adapted to be inserted into the casing thru a slot 10 formed in one side thereof, so'as to lie between the ound glass and walls 5 with the sensitiz'e plate 11 exposed at the outer end of the space between ,the divergent walls 4.

The space in the casing forward` of the 'loI partition 2 is adapted to c ntain the shutter I and illuminating unit w ich comprises a frame 12 consisting of a rear wall or late 13y and four walls 14 which latter exten' outwardly from the wall 13 divergently to short inwardl 4extending walls 15 on the adjacent en of the casing. The walls 15 provide an o ening in thisend of the casing correspon `lng in size to the opening at the walls 5. 'lhe divergent walls 14 are opaque from their inner ends to points centrally of their ends and otherwise are formed of f clouded glass sections 16. Extending from the rear -wall- 13 along the outer side ofthe opaque portion of each wall 15 is. a. socket.

support 17 having 'an incandescent lamp socket 18 in its outer end. By this arrangement four lamps 19 may be disposed close to the outer sides of the clouded glass sectionsf 16 of the walls 14. The lamps thus disposed willprovide for proper illumination of the subject photography, which subject will be held or disposed at the opening B at the front end of the casing 1.

The rear wall or plate 13 is provided a shutter opening 2Q alining with the lens 3 fixed tothe wall 13 and to the handle so that in moving the handle to slide the shutter into open position the spring is flexed and when the handle is released said spring returns the shutter to closed position.

A circuit closer 27 is operatively associated with the handle and is closed when 1,5 thehandle is moved into position to openj the shutter, Whereas said closer opens when the shutter moves into closed position. The circuit closure is electrically connected in any suitable manner with the incandescent lights and with a plug socket 28 whichlopens upon the outside of the upper wall of the casing. A suitable wire cord and" plug 28 may be used to electrically connect the camera with the ordinary household or ofiice electric light socket, not shown. With this arrangement the circuit for the lights is closed simultaneously with the opening of the shutter and opens immediately when the shutter is closed. This provides for a sav- 3@ ing in electrical energy, as the lights are used only while the shutter is open, but momentarily.

There is provided a guide member 29 on the rear face of the Wall 13, which guide registers at its upper open end with a slot or opening-,30 in the upper Wall of the casing 1. This guide has an opening 31 therein registering with theshutter openings and the lens, there being a recess 32 in the rear face of the guide around said opening 31, which recess receives the projecting part of the lens 3. A color filter slide 33 is adapted to be inserted into the guide 29 thru the openinar 30 and fits snugly in the guide so that it will be self-supporting therein, in any one of a number of positions. The slide has a plurality of spaced openings 34 therein, each opening having a slot in one side so as to permit of the insertion of a colored glass plate 35 into said opening. In this way the slide may be used 'to support three differentry colored screens or plates, each plate being removable so that a plate or screen of a1 different color may be inserted.

By adjusting the 'slide' the plate having the desired color may be brought between the lens and shutter so that' the image will filter thru the colored glass before passing thru the lens. Thus where color values are 50 desired 'by use of the color filter vI ma obtaln true color values in the negative p otographic plate.

In using the camera, the open end B is placed over or against the object, such as a ank check or finger print bearing object,

roove 21 in its rear face.o

and b .looking into the opening at the rear end the camera the imagewlll be shown upon the ground glass 7 as projected by the lens.

When the shutter is opened the circuit closer is o rated to close the circuit for the lamps an the lamps will be illuminated asA long as the shutter is held open. When the camera is in the right position relative to the object to be photographed or vice-versa, the shutter is allowed to close and the sensitized plate is slipped into place thru theopening in the side of the camera. By then opening the shutter the lamps will be illuminate and the image recorded on 'the sensitized plate in the usual manner, 'If color values in the object are to be brought out, the operator may determine the necessary color filter by first sighting thru the ground glass with the sensitized plate removed from the camera. By adjusting the slide the glass having the desired color may be brought into proper position to filter and provide for recording the desired color value on the Vsensitized plate.

I claim:

1. A camera comprising an elongatrd casing open at both ends, a artition extending across a mediate part o the casing, a lens within the partition, a glass plate extending across the casing adjacent to one end thereof and rearwardly of the lens, said casing having a space therein adjacent to said plate into which space a photographic sensitized element is adapted to be mounted, a shutter disposed in front of the lens, illuminating means Within the casing, a color filter slide adapted to be inserted into the casing, said casinghaving an opening therein thru which the slide is insertable, said slide having'a colored plate thereon adapted to be move into alinement with the lens and shutter.

2. A camera comprising an elongated casing open at both ends, a partition extending across a mediate part of theV casing, a lens within the partition, a translucent glass plate extending across the casin adjacent to one end thereof and rearwar ly-of the lens, said casing having a space therein adjacent to said plate into which.space a photographic sensitized element is adapted tobe mounted, a plate disposed in front of the partition and close thereto, a shutter carried by said plate and registering with the lens, a plurality of walls extending from the plate to the other end of the'casing, said l'lo walls having translucent portions, a plu-l rality of electric lamps between the trans-l lucent portions of the Walls and said casing and an electrical circuit for said 'lam s.

3. A camera comprising an elongate casing open at both ends, a artition extending across a mediate part o the casing, a lens within the partition, a translucent gli@ plate extending acro the casing adjacent to one end thereof and rearwardly of the photographic sensitized eleinent is adapted to bemounted, a plate disposed in front ,of-

thel partition and close thereto, Ia shutter carried by said plate and registering with the lens, a plurality of walls extendingrom the plate to the other end of the casing, said walls having translucent portions, a. plurality of electric lamps/ between the translucent portions of the walls and said casing, an electrical circuit for'said lamps, means for opening and closing the shutter and a circuit closer for the electrical circuit associated with said shutter operating means and arranged to close the circuit when .the shutter is open and to open the circuit when the shutter is closed.

4. A camera comprising a casing having openings at opposite ends, a lens located within the casln between. said openin a' glass plate in sai casing adjacent one-osthe openings, means of illumination within the casing adjacent the other opening arranged to illuminate the subject of photography when said last named opening is brought in close proximity to the subject, means providing for the disposal of the photographic sensitized element between said glass plate and lens and a shutter cooperating with the lens.

5. A camera comprising a casing havin openings at opposite ends, a lens located within the casing between said openings, a glass plate in said casing adjacent/fone of the openings, means of illumination/'within the casing adjacent the other opening arranged to illuminate the subject of photography when said last named opening is brought in close proximity to the subject, means providing for the disposal of the photographic sensit1ze\l element between said glass plate and lens, a shutter cooperating with the lens and a color filter device removably mounted in the casing with its color filter in registration with the lens.

' GEORGE W. BLUM. 

